3D cultural and creative product design equipment based on FDM technology

Abstract

The invention provides 3D cultural and creative product design equipment based on an FDM technology, the 3D cultural and creative product design equipment comprises an equipment box body, a fixed bottom plate is fixedly connected to the middle of the interior of the equipment box body, a first threaded rod is rotatably connected to one side of the top end of the fixed bottom plate, and a sliding rod is fixedly connected to the other side of the top end of the fixed bottom plate; moving blocks are arranged at one end of the sliding rod and one end of the first threaded rod, the end of the first threaded rod is in threaded fit with the moving blocks, the end of the sliding rod is in sliding fit with the moving blocks, and a scraper is fixedly connected between the moving blocks. Programming operation in the prior art is completed on an object needing to be printed through a control panel, then a second threaded rod is driven by a first motor to rotate, the second threaded rod is in threaded fit with a first threaded block after rotation, threaded movement can be achieved, transverse position movement is completed through a printer head, and 3D printing operation is conducted; and meanwhile, a second motor drives a third threaded rod to rotate to be in threaded fit with a second threaded block again, and longitudinal position movement is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D cultural and creative design equipment, and specifically to a 3D cultural and creative product design equipment based on FDM technology. Background Art

[0002] Cultural and creative products, or "cultural and creative products", refer to high value-added products produced by relying on the wisdom, skills and talents of creative people, with the help of modern scientific and technological means to create and improve cultural resources and cultural supplies, through the development and application of intellectual property rights, such as China's top 100 cultural and creative products. Even 3D cultural and creative products can be produced by stacking corresponding design devices, so that the design device will use its own program design effects to stably produce the corresponding 3D cultural and creative products.

[0003] The 3D cultural and creative product design equipment in the prior art adopts a large number of intelligent control devices during use, so the cost of the equipment is relatively high during production and use, which is not convenient for low-cost widespread promotion and use. At the same time, the objects printed by the 3D printing equipment during use need to be demolded and taken out. The traditional method easily causes damage to the connection between the bottom and the base plate, affecting the yield rate, and cannot effectively, quickly and conveniently complete the demolding and taking work. It is inconvenient to use and needs further improvement. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a 3D cultural and creative product design device based on FDM technology, which solves the problem that the traditional method easily causes damage to the connection between the bottom and the base plate, affects the yield rate, and cannot effectively, quickly and conveniently complete the demoulding and picking work.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A 3D cultural and creative product design device based on FDM technology, comprising: an equipment box, a fixed bottom plate is fixedly connected to the inside of the equipment box, a first threaded rod is rotatably connected to one side of the top of the fixed bottom plate, a sliding rod is fixedly connected to the other side of the top of the fixed bottom plate, a moving block is arranged at one end of the sliding rod and the first threaded rod, the end of the first threaded rod is threadedly matched with the moving block, the end of the sliding rod is slidably matched with the moving block, and a scraper is fixedly connected between the moving blocks;

[0008] The top of the fixed bottom plate is fixedly connected with a semiconductor refrigeration sheet, the bottom of the semiconductor refrigeration sheet is fixedly connected with a heat-conducting aluminum sheet net, the bottom of the heat-conducting aluminum sheet net is fixedly connected with a cooling fin, and both sides of the bottom of the cooling fin are fixedly connected with a fixed sleeve;

[0009] A third threaded rod is rotatably connected to one side of the inner top of the equipment box, and second threaded blocks are threadedly connected to both sides of the middle of the third threaded rod, and one end of the second threaded block on one side is fixedly connected to the second threaded rod.

[0010] Preferably, a sliding block is provided at one end of the second threaded rod, a first motor is fixedly connected to the outer side of the sliding block, and a driving end of the first motor is fixedly connected to the second threaded rod.

[0011] Preferably, the middle portion of the second threaded rod is threadedly connected to a first threaded block, and the bottom end of the first threaded block is fixedly connected to a printer head.

[0012] Preferably, a first box door is rotatably connected to the bottom front end of the equipment box, and a second box door is rotatably connected to the upper front end of the equipment box.

[0013] Preferably, the bottom ends of both sides of the equipment box are fixedly connected with fixed nets, a third motor is fixedly connected to the middle of one rear end of the equipment box, and the driving end of the third motor is fixedly connected to the first threaded rod.

[0014] Preferably, a servo motor is fixedly connected to the interior of the fixed sleeve, and a fan blade is fixedly connected to the driving end of the servo motor.

[0015] Preferably, a second motor is fixedly connected to the top end of the rear side of the device box, a driving end of the second motor is fixedly connected to the third threaded rod, and a control panel is fixedly connected to the top end of the front side of the device box.

[0016] Preferably, the upper and lower sides of the slider are slidably matched with sliding grooves.

[0017] (III) Beneficial effects

[0018] The present invention provides a 3D cultural and creative product design device based on FDM technology. It has the following beneficial effects:

[0019] 1. The present invention discloses a 3D creative product design device based on FDM technology. The device comprises: a first motor, a second threaded rod, a first threaded block and a printer head. The control panel completes the programming operation in the prior art for the object to be printed. Then, the second threaded rod is driven to rotate by the first motor. After rotation, the second threaded rod is threadedly matched with the first threaded block to realize thread movement. The printer head completes the lateral position movement to perform the 3D printing operation. At the same time, the second motor drives the third threaded rod to rotate, and the third threaded rod is threadedly matched with the second threaded block again to complete the longitudinal position movement. The third threaded rod is extended by the electric telescopic rod at the driving end of the printer head. The structure can drive the printer head to complete the movement in different directions of XYZ, while reducing the operating cost.

[0020] 2. The present invention provides a 3D cultural and creative product design device based on FDM technology, which is provided with: a third motor, a first threaded rod, a moving block and a scraper. The third motor drives the first threaded rod to rotate, and then the first threaded rod is threadedly matched with the moving block to complete the movement of the scraper, thereby scraping the bottom of the printed object and detaching it from the fixed base plate for easy detachment.

[0021] 3. The present invention is a 3D cultural and creative product design equipment based on FDM technology, which is provided with: a semiconductor refrigeration plate, a fixed base plate, a heat-conducting aluminum sheet net and cooling fins. The cooling end of the semiconductor refrigeration plate is fitted with the fixed base plate to complete cooling conduction and improve the separation and cooling effect. Then, the heat dissipation end of the semiconductor refrigeration plate can conduct heat through the heat-conducting aluminum sheet net and the cooling fins. Then, the internal servo motor of the fixed sleeve is driven to rotate the fan blades. After rotation, the heat generated by the cooling fins is led out to achieve the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a front view schematic diagram of the internal structure of the present invention;

[0024] Figure 3 It is a schematic cross-sectional front view of the present invention;

[0025] Figure 4 It is a schematic diagram of the disassembly of the semiconductor cooling plate and the fixed sleeve of the present invention;

[0026] Figure 5 It is an enlarged schematic diagram of the second threaded rod and the third threaded rod structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the scraper structure of the present invention.

[0028] Among them, 1. Equipment box; 2. First box door; 3. Second box door; 4. Control panel; 5. First motor; 6. Second motor; 7. Third motor; 8. Fixed net; 9. First threaded rod; 10. Scraper; 11. Fixed bottom plate; 12. First threaded block; 13. Second threaded rod; 14. Printer head; 15. Semiconductor refrigeration plate; 16. Fixed sleeve; 17. Cooling fins; 18. Fan; 19. Servo motor; 20. Thermal conductive aluminum sheet net; 21. Third threaded rod; 22. Second threaded block; 23. Slide groove; 24. Slider; 25. Slide rod; 26. Moving block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] like Figure 1-6 As shown, the embodiment of the present invention provides a 3D cultural and creative product design device based on FDM technology, including: an equipment box 1, characterized in that: a fixed bottom plate 11 is fixedly connected at the middle of the interior of the equipment box 1, a first threaded rod 9 is rotatably connected to one side of the top of the fixed bottom plate 11, a sliding rod 25 is fixedly connected to the other side of the top of the fixed bottom plate 11, and a moving block 26 is arranged at one end of the sliding rod 25 and the first threaded rod 9, the end of the first threaded rod 9 is threadedly matched with the moving block 26, the end of the sliding rod 25 is slidably matched with the moving block 26, a scraper 10 is fixedly connected between the moving blocks 26, and the position of the scraper 10 The device moves so as to scrape off the bottom of the printed object and separate it from the fixed bottom plate 11 for easy separation. The front bottom end of the device box 1 is rotatably connected to the first box door 2, and the front upper part of the device box 1 is rotatably connected to the second box door 3. The bottom ends of both sides of the device box 1 are fixedly connected to the fixed net 8. The middle part of one end of the rear side of the device box 1 is fixedly connected to the third motor 7, which is driven by the third motor 7. After driving, the first threaded rod 9 is driven to rotate, and then the first threaded rod 9 is threadedly matched with the moving block 26 to complete the position movement of the scraper 10. The driving end of the third motor 7 is fixedly connected to the first threaded rod 9.

[0032] The top of the fixed bottom plate 11 is fixedly connected with a semiconductor refrigeration sheet 15. Before the scraper 10 is scraped, the cooling end of the semiconductor refrigeration sheet 15 needs to be attached to the fixed bottom plate 11 to complete the cooling conduction and improve the separation and cooling effect. The bottom end of the semiconductor refrigeration sheet 15 is fixedly connected with a heat-conducting aluminum sheet net 20. The heat dissipation end of the semiconductor refrigeration sheet 15 can conduct heat through the heat-conducting aluminum sheet net 20 and the cooling fins 17. The bottom end of the heat-conducting aluminum sheet net 20 is fixedly connected with a cooling fin 17. Both sides of the bottom end of the cooling fin 17 are fixedly connected with a fixed sleeve 16. The internal servo motor 19 of the fixed sleeve 16 drives the fan blade 18 to rotate. The servo motor 19 is fixedly connected to the interior of the fixed sleeve 16, and the driving end of the servo motor 19 is fixedly connected to the fan 18. The second motor 6 is fixedly connected to the top of the rear side of the device box 1. The second motor 6 drives the rotation of the third threaded rod 21, and again cooperates with the second threaded block 22 to complete the longitudinal position movement. The driving end of the second motor 6 is fixedly connected to the third threaded rod 21, and the front top of the device box 1 is fixedly connected to the control panel 4. The programming operation in the prior art is completed by placing the control panel 4 on the object to be printed.

[0033] A third threaded rod 21 is rotatably connected to one side of the top inner side of the equipment box 1, and second threaded blocks 22 are threadedly connected to both sides of the middle part of the third threaded rod 21, and one end of the second threaded block 22 on one side is fixedly connected to the second threaded rod 13, and a slider 24 is provided at one end of the second threaded rod 13, and a slide groove 23 is slidably matched with the upper and lower sides of the slider 24, and a first motor 5 is fixedly connected to the outer side of the slider 24, and the second threaded rod 13 is driven to rotate by the first motor 5, and after rotation, it is threadedly matched with the first threaded block 12 to realize thread movement, and the driving end of the first motor 5 is fixedly connected to the second threaded rod 13, and the middle part of the second threaded rod 13 is threadedly connected to the first threaded block 12, and the bottom end of the first threaded block 12 is fixedly connected to the printer head 14, and the lateral position movement is completed by the printer head 14 to perform 3D printing operation, and the extension is completed by the electric telescopic rod at the driving end of the printer head 14. This structure can drive the printer head 14 to complete the movement in different directions of XYZ, while reducing the operating cost.

[0034] Embodiment 2:

[0035] The embodiment of the present invention provides a 3D cultural and creative product design device based on FDM technology, including: a device box 1, characterized in that: a fixed bottom plate 11 is fixedly connected at the middle of the inside of the device box 1, a first threaded rod 9 is rotatably connected to one side of the top of the fixed bottom plate 11, a sliding rod 25 is fixedly connected to the other side of the top of the fixed bottom plate 11, and a moving block 26 is arranged at one end of the sliding rod 25 and the first threaded rod 9, the end of the first threaded rod 9 is threadedly matched with the moving block 26, the end of the sliding rod 25 is slidably matched with the moving block 26, a scraper 10 is fixedly connected between the moving blocks 26, and the position of the scraper 10 The scraper 10 is moved so as to scrape off the bottom of the printed article and separate it from the fixed bottom plate 11 for easy separation. The front bottom end of the equipment box 1 is rotatably connected to the first box door 2, and the front upper part of the equipment box 1 is rotatably connected to the second box door 3. The bottom ends of both sides of the equipment box 1 are fixedly connected to a fixed net 8. The middle part of the rear end of the equipment box 1 is fixedly connected to a third motor 7, which is driven by the third motor 7. After driving, the first threaded rod 9 is driven to rotate, and then threadedly cooperated with the moving block 26 to complete the position movement of the scraper 10. The driving end of the third motor 7 is fixedly connected to the first threaded rod 9.

[0036] Embodiment three:

[0037] The embodiment of the present invention provides a 3D cultural and creative product design device based on FDM technology, including: a device box 1, characterized in that: a fixed bottom plate 11 is fixedly connected at the middle of the inside of the device box 1, a first threaded rod 9 is rotatably connected to one side of the top of the fixed bottom plate 11, a sliding rod 25 is fixedly connected to the other side of the top of the fixed bottom plate 11, and a moving block 26 is arranged at one end of the sliding rod 25 and the first threaded rod 9, the end of the first threaded rod 9 is threadedly matched with the moving block 26, the end of the sliding rod 25 is slidably matched with the moving block 26, a scraper 10 is fixedly connected between the moving blocks 26, and the position of the scraper 10 The first door 2 is rotatably connected to the bottom end of the front side of the equipment box 1, and the second door 3 is rotatably connected to the upper front side of the equipment box 1. The bottom ends of both sides of the equipment box 1 are fixedly connected to a fixed net 8. The middle part of one end of the rear side of the equipment box 1 is fixedly connected to a third motor 7. The third motor 7 drives the first threaded rod 9 to rotate, and then the first threaded rod 9 is threadedly matched with the moving block 26 to complete the position movement of the scraper 10. The driving end of the third motor 7 is fixedly connected to the first threaded rod 9.

[0038] The top of the fixed bottom plate 11 is fixedly connected with a semiconductor refrigeration sheet 15. Before the scraper 10 is scraped, the cooling end of the semiconductor refrigeration sheet 15 needs to be attached to the fixed bottom plate 11 to complete the cooling conduction and improve the separation and cooling effect. The bottom end of the semiconductor refrigeration sheet 15 is fixedly connected with a heat-conducting aluminum sheet net 20. The heat dissipation end of the semiconductor refrigeration sheet 15 can conduct heat through the heat-conducting aluminum sheet net 20 and the cooling fins 17. The bottom end of the heat-conducting aluminum sheet net 20 is fixedly connected with a cooling fin 17. Both sides of the bottom end of the cooling fin 17 are fixedly connected with a fixed sleeve 16. The internal servo motor 19 of the fixed sleeve 16 drives the fan blade 18 to rotate. The heat generated by the cooling fins 17 is led out after the rotation to achieve the heat dissipation effect. The interior of the fixed sleeve 16 is fixedly connected with a servo motor 19, and the driving end of the servo motor 19 is fixedly connected with a fan 18. The top end of the rear side of the equipment box 1 is fixedly connected with a second motor 6. The second motor 6 drives the rotation of the third threaded rod 21, and again cooperates with the second threaded block 22 to complete the longitudinal position movement. The driving end of the second motor 6 is fixedly connected to the third threaded rod 21, and the top end of the front side of the equipment box 1 is fixedly connected with a control panel 4. The programming operation in the prior art is completed by placing the control panel 4 on the object to be printed.

[0039] Embodiment 4:

[0040] The embodiment of the present invention provides a 3D cultural and creative product design device based on FDM technology, including: a device box 1, characterized in that: a fixed bottom plate 11 is fixedly connected at the middle of the inside of the device box 1, a first threaded rod 9 is rotatably connected to one side of the top of the fixed bottom plate 11, a sliding rod 25 is fixedly connected to the other side of the top of the fixed bottom plate 11, and a moving block 26 is arranged at one end of the sliding rod 25 and the first threaded rod 9, the end of the first threaded rod 9 is threadedly matched with the moving block 26, the end of the sliding rod 25 is slidably matched with the moving block 26, a scraper 10 is fixedly connected between the moving blocks 26, and the position of the scraper 10 The first door 2 is rotatably connected to the bottom end of the front side of the equipment box 1, and the second door 3 is rotatably connected to the upper front side of the equipment box 1. The bottom ends of both sides of the equipment box 1 are fixedly connected to a fixed net 8. The middle part of one end of the rear side of the equipment box 1 is fixedly connected to a third motor 7. The third motor 7 drives the first threaded rod 9 to rotate, and then the first threaded rod 9 is threadedly matched with the moving block 26 to complete the position movement of the scraper 10. The driving end of the third motor 7 is fixedly connected to the first threaded rod 9.

[0041] The top of the fixed bottom plate 11 is fixedly connected with a semiconductor refrigeration sheet 15. Before the scraper 10 is scraped, the cooling end of the semiconductor refrigeration sheet 15 needs to be attached to the fixed bottom plate 11 to complete the cooling conduction and improve the separation and cooling effect. The bottom end of the semiconductor refrigeration sheet 15 is fixedly connected with a heat-conducting aluminum sheet net 20. The heat dissipation end of the semiconductor refrigeration sheet 15 can conduct heat through the heat-conducting aluminum sheet net 20 and the cooling fins 17. The bottom end of the heat-conducting aluminum sheet net 20 is fixedly connected with a cooling fin 17. Both sides of the bottom end of the cooling fin 17 are fixedly connected with a fixed sleeve 16. The internal servo motor 19 of the fixed sleeve 16 drives the fan blade 18 to rotate. The servo motor 19 is fixedly connected to the interior of the fixed sleeve 16, and the driving end of the servo motor 19 is fixedly connected to the fan 18. The second motor 6 is fixedly connected to the top of the rear side of the device box 1. The second motor 6 drives the rotation of the third threaded rod 21, and again cooperates with the second threaded block 22 to complete the longitudinal position movement. The driving end of the second motor 6 is fixedly connected to the third threaded rod 21, and the front top of the device box 1 is fixedly connected to the control panel 4. The programming operation in the prior art is completed by placing the control panel 4 on the object to be printed.

[0042] A third threaded rod 21 is rotatably connected to one side of the top inner side of the equipment box 1, and second threaded blocks 22 are threadedly connected to both sides of the middle part of the third threaded rod 21, and one end of the second threaded block 22 on one side is fixedly connected to the second threaded rod 13, and a slider 24 is provided at one end of the second threaded rod 13, and a slide groove 23 is slidably matched with the upper and lower sides of the slider 24, and a first motor 5 is fixedly connected to the outer side of the slider 24, and the second threaded rod 13 is driven to rotate by the first motor 5, and after rotation, it is threadedly matched with the first threaded block 12 to realize threaded movement.

[0043] Working principle: When in use, firstly, the control panel 4 is used to complete the programming operation in the prior art for the object to be printed, and then the second threaded rod 13 is driven to rotate by the first motor 5, and after rotation, it is threadedly matched with the first threaded block 12 to realize thread movement, and the lateral position movement is completed by the printer head 14 to perform 3D printing operation, and at the same time, the second motor 6 drives the third threaded rod 21 to rotate, and again threadedly matches with the second threaded block 22 to complete the longitudinal position movement, and the extension is completed by the electric telescopic rod at the driving end of the printer head 14. This structure can drive the printer head 14 to complete the movement in different directions of XYZ, while reducing the operating cost. When printing is completed, the printer head 14 can be moved through the third motor 6. The three motors 7 drive the first threaded rod 9 to rotate, and then threadedly cooperate with the moving block 26 to complete the movement of the scraper 10, so as to scrape the bottom of the printed object and separate it from the fixed bottom plate 11 for easy separation. Before the scraper 10 scrapes, the cooling end of the semiconductor refrigeration plate 15 needs to be fitted with the fixed bottom plate 11 to complete cooling conduction and improve the separation and cooling effect. Then the heat dissipation end of the semiconductor refrigeration plate 15 can conduct heat through the heat-conducting aluminum mesh 20 and the cooling fins 17. Then the internal servo motor 19 of the fixed sleeve 16 is driven to rotate the fan blade 18. After rotation, the heat generated by the cooling fins 17 is led out to achieve the heat dissipation effect.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 3D cultural and creative product design device based on FDM technology, comprising: The device box (1) is characterized in that: a fixed bottom plate (11) is fixedly connected to the interior of the device box (1), a first threaded rod (9) is rotatably connected to one side of the top of the fixed bottom plate (11), a sliding rod (25) is fixedly connected to the other side of the top of the fixed bottom plate (11), one end of the sliding rod (25) and the first threaded rod (9) are both provided with a moving block (26), the end of the first threaded rod (9) and the moving block (26) are threadedly matched, the end of the sliding rod (25) and the moving block (26) are slidably matched, and a scraper (10) is fixedly connected between the moving blocks (26); The top end of the fixed bottom plate (11) is fixedly connected to a semiconductor cooling plate (15), the bottom end of the semiconductor cooling plate (15) is fixedly connected to a heat-conducting aluminum sheet net (20), the bottom end of the heat-conducting aluminum sheet net (20) is fixedly connected to a cooling fin (17), and both sides of the bottom end of the cooling fin (17) are fixedly connected to a fixed sleeve (16); A third threaded rod (21) is rotatably connected to one side of the internal top end of the equipment box (1), and second threaded blocks (22) are threadedly connected to both sides of the middle of the third threaded rod (21), and one end of the second threaded block (22) is fixedly connected to the second threaded rod (13) on one side.

2. The 3D cultural and creative product design device based on FDM technology according to claim 1, characterized in that: A slider (24) is provided at one end of the second threaded rod (13), a first motor (5) is fixedly connected to the outer side of the slider (24), and a driving end of the first motor (5) is fixedly connected to the second threaded rod (13).

3. The 3D cultural and creative product design device based on FDM technology according to claim 1, characterized in that: The middle part of the second threaded rod (13) is threadedly connected to the first threaded block (12), and the bottom end of the first threaded block (12) is fixedly connected to the printer head (14).

4. The 3D cultural and creative product design device based on FDM technology according to claim 1, characterized in that: The front bottom end of the equipment box body (1) is rotatably connected to a first box door (2), and the front upper end of the equipment box body (1) is rotatably connected to a second box door (3).

5. The 3D cultural and creative product design device based on FDM technology according to claim 1, characterized in that: The bottom ends of both sides of the device box (1) are fixedly connected to a fixed net (8), the middle part of the rear end of the device box (1) is fixedly connected to a third motor (7), and the driving end of the third motor (7) is fixedly connected to the first threaded rod (9).

6. The 3D cultural and creative product design device based on FDM technology according to claim 1, characterized in that: A servo motor (19) is fixedly connected inside the fixed sleeve (16), and a fan blade (18) is fixedly connected to the driving end of the servo motor (19).

7. The 3D cultural and creative product design device based on FDM technology according to claim 1, characterized in that: A second motor (6) is fixedly connected to the top rear side of the device box (1); a driving end of the second motor (6) is fixedly connected to a third threaded rod (21); and a control panel (4) is fixedly connected to the top front side of the device box (1).

8. The 3D cultural and creative product design device based on FDM technology according to claim 1, characterized in that: The upper and lower sides of the slider (24) are slidably matched with sliding grooves (23).

Images